When I create a sketch, I often dimension between two parallel lines.  And most of the time, the line that moves is the one that I need to stay put!  It's frustrating!

I know that I can add the appropriate relations to fix the necessary lines, but it seems to me that when using Smart Dimension, the order of selection should determine which entity moves after the dimension has been defined.  For example, if I clicked on the line that I wanted to move first, it would be perfect!  But I tested that, and it doesn't work.  It wouldn't have to create a relation, but it would be awesome for speeding up sketches by giving more control to the user.

I should mention, I use relations CONSTANTLY.  They're incredibly important, and I would never advocate skipping relations.  This would just speed things up.  Is there an existing feature that can do something similar to what I'm describing?